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AbstractAbstract
[en] Experimental verification of the new dichotomic sampling scheme was attempted and applied to a circular ring PET system to improve the sampling thereby the overall system resolution and its performances. In the experiment, two different types of aperture collimators were adopted for high resolution (HR) and very high resolution (VHR) imaging. In HR mode, a resolution of 6.5 mm FWHM was obtained without appreciable degradation in overall sensitivity which represents a threefold resolution improvement over the original system. In phantom studies with HR mode a sensitivity of 4500 counts/sec/μCi/cc was obtained for a 20 cm diameter uniform phantom filled with water. VHR mode experiment was also conducted to observe the ultimate resolution capability of DICHOTOM-I system and resolution of 4.2 mm FWHM was obtained at the expense of sensitivity reduction by a factor of four from HR mode experiment. 11 figures, 2 tables
Primary Subject
Source
IEEE nuclear science symposium; Washington, DC (USA); 20-22 Oct 1982; CONF-821011--
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Schwantes, E.; Stork, K.
Brown, Boveri und Cie A.G., Mannheim (Germany, F.R.); Brown Boveri Reaktor G.m.b.H., Mannheim (Germany, F.R.)
Brown, Boveri und Cie A.G., Mannheim (Germany, F.R.); Brown Boveri Reaktor G.m.b.H., Mannheim (Germany, F.R.)
AbstractAbstract
[en] The reactor building and the auxiliary buildings of a PWR are situated on a common baseplate where one ceiling covers all the auxiliary buildings. The ceiling is directly connected to the reactor building and via supporting walls to the baseplate. The structure of at least some auxiliary buildings is decoupled from the ceiling and the supporting walls. (orig./HP)
[de]
Das Reaktorgebaeude und die Nebengebaeude eines DWR sind auf einer gemeinsamen Fundamentplatte angeordnet, wobei eine Decke alle Nebengebaeude uebergreift. Die Decke ist dabei unmittelbar mit dem Reaktorgebaeude und ueber Stuetzwaende mit der Fundamentplatte verbunden. Dabei ist die Baustruktur wenigstens einiger Nebengebaeude gegenueber der Decke und den Stuetzwaenden entkoppelt. (orig./HP)Original Title
Kernreaktoranlage
Primary Subject
Source
29 Dec 1983; 18 Jun 1982; 9 p; DE PATENT DOCUMENT 3222943/A/; Available from Deutsches Patentamt, Muenchen (Germany, F.R.); ?: 18 Jun 1982
Record Type
Patent
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The filter cartridge has a cylindrical case with an inlet and outlet on the front which is closed by rubber rings. These can be penetrated by a channel to make a connection. The filter cartridge itself has a filling of active carbon powder carried by supporting sieves between two glass fiber end layers. The active carbon is impregnated with silver chloride and possibly mixed with manganese dioxide. The spaces of the filter cartridge are filled with water, so that there is no air enclosure. (DG)
[de]
Die Filterpatrone weist ein zylinderfoermiges Gehaeuse mit stirnseitig zugeordnetem Ein- und Auslass auf, die mittels Gummisepten verschlossen sind. Sie sind zur Herstellung eines Anschlusses mit einer Kanuele durchsteckbar. Die Filterpatrone selbst weist zwischen zwei Glasfaserendschichten eine von Stuetzsieben getragene Fuellung aus pulvriger Aktivkohle auf. Die Aktivkohle ist mit Silberchlorid impraegniert und eventuell mit Braunstein vermischt. Die Zwischenraeume der Filterpatrone sind mit Wasser aufgefuellt, so dass kein Lufteinschluss vorhanden ist. (DG)Original Title
Filterpatrone zur Aussonderung von Radiojod aus waessrigen Loesungen
Primary Subject
Source
21 Apr 1983; 13 Mar 1981; 9 p; DE PATENT DOCUMENT 8107147/U1/; Available from Deutsches Patentamt, Muenchen (Germany, F.R.); ?: 13 Mar 1981
Record Type
Patent
Country of publication
ADSORBENTS, BUILDINGS, CARBON, CHLORIDES, CHLORINE COMPOUNDS, CLEANING, ELEMENTS, HALIDES, HALOGEN COMPOUNDS, HYDROGEN COMPOUNDS, MATERIALS, MEDICAL ESTABLISHMENTS, NONMETALS, OXYGEN COMPOUNDS, POLAR SOLVENTS, RADIOACTIVE MATERIALS, SEPARATION PROCESSES, SILVER COMPOUNDS, SOLVENTS, TRANSITION ELEMENT COMPOUNDS, WASTES, WATER
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Gaebler, J.
Tuebingen Univ. (Germany, F.R.). Medizinische Fakultaet
Tuebingen Univ. (Germany, F.R.). Medizinische Fakultaet
AbstractAbstract
[en] The results of conventional hepatosplenic scintiscans from 232 patients were contrasted with those obtained by the additional use of emission computed tomography and computed evaluation of the tomograms. In 197 cases the scintiscan findings were in agreement with those revealed by emission computed tomography (ECAT). 23 Scintigrams, however, suggested the presence of a focus that was not confirmed by ECAT, whereas the scintigrams failed to point to a focus in 12 patients positive on ECAT. An evaluation of the course of disease permitting a firm diagnosis to be established could be made in 123 patients just on the basis of transmission computed tomography or other reliable methods of investigation. This led to the conclusion that the high sensitivity of the scintiscans cannot be improved further by ECAT. One decisive advantage offered by ECAT, however, is high specifity. This means that even though the use of ECAT is associated with reduced absolute sensitivity, it leads to an increase in specifity from 92 to 98% and an increase in diagnostic accuracy from 92 to 97%. ECAT can therefore be regarded as an approach to improved hepatosplenic scintiscanning in the form of three-dimensional scans and computer-aided quantitative evaluation of the latter. (TRV)
[de]
Bei 232 Patienten wurden die Ergebnisse der konventionellen Leber-Milzszintigraphie mit zusaetzlich angefertigten Emissionscomputertomogrammen einschliesslich Rechnerauswertung der Tomogramme verglichen. Bei 197 Szintigrammen stimmten die Ergebnisse mit den Ergebnissen der Emissions-Computertomographie (ECAT) ueberein. 23 Szintigramme mit Herdverdacht waren bei der ECAT o.B., 12 Szintigramme ohne Herdverdacht liessen bei der ECAT einen positiven Befund zu. Bei 123 Patienten war aufgrund der Untersuchung mit einem Transmissionscomputertomographen oder abschliessender anderer Untersuchungen der Krankheitsverlauf mit einer Enddiagnose gesichert. Es zeigte sich, dass die ECAT die bereits hohe Sensitivitaet der Szintigraphie nicht verbessern kann. Dafuer zeichnet sich die ECAT vorwiegend durch hohe Spezifitaet aus, so dass mit der ECAT die Sensitivitaet absolut sinkt, dafuer aber die Spezifitaet von 92% auf 98% und die Treffsicherheit von 92% auf 97% steigt. Die ECAT bietet damit einen Ansatz zur Verbesserung der Leber-Milzszintigraphie auf die Weiterentwicklung einer dreidimensionalen Szintigraphie und deren computergestuetzte quantitative Auswertung. (TRV)Original Title
Klinische Erfahrungen der Emissionscomputertomographie ECAT mit dem MS 425-CAT Multipoise Scanner fuer computergestuetzte axiale Tomographie
Primary Subject
Source
1983; 40 p; Available from the library of Tuebingen Univ. (Germany, F.R.); Diss. (Dr.med.dent.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Hallmann, U.
Technische Univ. Muenchen (Germany, F.R.). Fakultaet fuer Medizin
Technische Univ. Muenchen (Germany, F.R.). Fakultaet fuer Medizin
AbstractAbstract
[en] 194 simultaneous functional series scintiscannings with 131-I-bromosulfophthalein and 99mTc-sulfur colloid and 87 examinations with 131-I-BSP alone build the basis for this study and, when necessary, included laparoscopic, radiological and histological findings. 29 persons served as the control group. For 131-I-BSP in accordance with pharmacokinetics a two-compartment model with two-directional exchange between plasma and liver and with excretion of the coloring material from the hepatocytes into the bile canaliculi was used. For 99mTc-S colloid a kinetic model which is made up of two distribution areas of plasma and RES with alternating material exchange was used. The functional series scintigraphy with 131-I-BSP is a good indicator for the excretion function of the liver. Even diseases which mostly proceed with a small liver function disturbance show significantly reduced clearance constants for 131-I-BSP in comparison to the norm. For 99mTc-S colloid it was not possible either with the help of the compartment analysis or by means of semiquantitative evaluation to determine significant differences between the individual parameters of people with healthy or diseased livers. Clinically strong diagnostic findings can therefore not be won using this method. (TRV)
[de]
194 simultane Funktionsserienszintigraphien mit 131J-Bromsulphthalein und 99mTc-Schwefelkolloid und 87 Untersuchungen mit 131J-BSP allein bildeten die Grundlage dieser Untersuchung, zu der auch laparoskopische, roentgenologische und histologische Befunde, wenn noetig, mit herangezogen wurden. 29 Probanden dienten als Normalkollektiv. Fuer 131J-BSP wird in Uebereinstimmung mit der Pharmakokinetik ein 2-Kompartmentmodell mit bidirektionalem Austausch zwischen Plasma und Leber und Ausscheidung des Farbstoffes aus den Hepatozyten in die Gallencanaliculi an, fuer 99mTc-S-Kolloid ein Kinetikmodell, das aus den zwei Verteilungsraeumen Plasma und RES mit wechselseitigem Substanzaustausch besteht. Die Funktionsserienszintigraphie mit 131J-BSP ist ein guter Indikator fuer die Ausscheidungsfunktion der Leber. Selbst Krankheiten, die meist mit einer geringen Leberfunktionsstoerung einhergehen, zeigen signifikant gegenueber der Norm verringerte Clearancekonstanten fuer 131J-BSP. Fuer 99mTc-S-Kolloid waren weder mit Hilfe der Kompartmentanalyse noch durch die semiquantitative Auswertung signifikante Unterschiede zwischen den einzelnen Parametern fuer Lebergesunde und -kranke festzustellen. Klinisch aussagekraeftige Befunde koennen daher durch diese Untersuchungsmethode nicht gewonnen werden. (TRV)Original Title
Simultane Funktionsserienszintigraphie der Leber mit 131J-Bromsulphalein und 99mTc-Schwefelkolloid unter Verwendung der Kompartmentanalyse
Primary Subject
Source
22 Apr 1983; 165 p; Available from the library of Technische Univ. Muenchen (Germany, F.R.); Diss. (Dr.med.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Country of publication
ANIMALS, AROMATICS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CARBOXYLIC ACID ESTERS, COLLOIDS, DAYS LIVING RADIOISOTOPES, DIGESTIVE SYSTEM, DISPERSIONS, DYES, ESTERS, EVALUATION, GLANDS, HOURS LIVING RADIOISOTOPES, HYDROXY COMPOUNDS, INDICATORS, INTERMEDIATE MASS NUCLEI, IODINE ISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, KINETICS, MAMMALS, MATHEMATICS, NUCLEI, ODD-EVEN NUCLEI, ORGANIC ACIDS, ORGANIC BROMINE COMPOUNDS, ORGANIC COMPOUNDS, ORGANIC HALOGEN COMPOUNDS, ORGANIC SULFUR COMPOUNDS, ORGANS, PHENOLS, POLYPHENOLS, PRIMATES, RADIOISOTOPES, REAGENTS, SULFONIC ACIDS, TECHNETIUM ISOTOPES, VERTEBRATES, YEARS LIVING RADIOISOTOPES
Publication YearPublication Year
Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
[en] This book is published with the financial support of the African Network of Scientific and Technological Institutions (ANSTI), an organization within UNESCO. The book contains numerous examples of actual hydraulics, projects and comprehensive set of problems. The second edition has been updated by the use of metric units throughout and expanded by the introduction of new sections on hydrostatics and routing of floods and river channels
Primary Subject
Secondary Subject
Source
1983; 440 p; MacMillan Press Ltd; London (UK); ISBN 0-333-343344; 

Record Type
Book
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The results of 406 scans obtained after the administration of autologous leukocytes labeled with 300 microcuries of 111-Indium (111-In WBC) to patients being evaluated for possible focal inflammatory disease involving the abdomen and/or retroperitoneal space are presented. Medical records were also reviewed to determine whether or not there was clinical evidence of an abscess or other inflammatory disease at the time of each scan. Scans in 143 cases were interpreted as showing abnormal foci of radioactivity whereas 131 studies were classified as abnormal on a clinical basis. Both criteria were deemed positive for inflammatory disease in 114 cases and both were negative in 220. Thirteen patients also had 67-Ga scans performed. The results from this small group suggest that the leukocyte labeling procedure may be slightly better than 67-Ga for detection of inflammatory disease in the abdomen or retroperitoneal space
Primary Subject
Source
Scott, G.P.; Wahner, H.W; vp; ISBN 0-8138-1496-0;
; 1983; vp; Iowa State University Press; Ames, IA (USA); 2. John Lawrence interdisciplinary symposium on the physical and biomedical sciences: radiation and cellular response; Sioux Falls, SD (USA); 3-4 Jun 1981

Record Type
Book
Literature Type
Conference
Country of publication
BETA DECAY RADIOISOTOPES, BIOLOGICAL MATERIALS, BLOOD, BLOOD CELLS, BODY, BODY AREAS, BODY FLUIDS, COUNTING TECHNIQUES, DAYS LIVING RADIOISOTOPES, DIAGNOSTIC TECHNIQUES, DISEASES, ELECTRON CAPTURE RADIOISOTOPES, GALLIUM ISOTOPES, INDIUM ISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPE APPLICATIONS, ISOTOPES, MATERIALS, MINUTES LIVING RADIOISOTOPES, NUCLEI, ODD-EVEN NUCLEI, PATHOLOGICAL CHANGES, RADIOISOTOPE SCANNING, RADIOISOTOPES
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Linford, L.
Rand Afrikaans Univ., Johannesburg (South Africa)
Rand Afrikaans Univ., Johannesburg (South Africa)
AbstractAbstract
[en] Reaction of the co-ordinatively unsaturated carbene thiochelate anion [Cr{C(O-)=C(SR1)SR2}(CO)3(THF)] with various ligands has been investigated. The P-donor ligand, P(OMe)2(0SiMe3) substitutes THF to yield, after alkylation, chiral tricarbonyl complexes. The ligands S=CN(H)CH2CH2NH and S=CSCH2CH2S cause displacement of THF and the carbene thioether chelate, leading to pentacarbonyl thione complexes. The reaction with S=CSCH2CH2S a thermolabile intermediate, gives rise to the dithiocarbene complex [Cr(CO)5CSCH2CH2S] and affords [Cr(CO)4(CNBut)CSCH2CH2S] on reaction with CNBut. Due to decreased reactivity of the co-ordinated thiocarbonyl group and the presence of the metal, novel reactions could be effected at other centres on the thione ligand in the complex [Cr(CO)5S=CSCH2CH2S]. Deprotonation followed by alkylation gives rise to ylid complex [Cr(CO)5{S=CS(Et)=CHCH2S}]. Consecutive deprotonation, addition of CS2 and alkylation yield a co-ordinated thioaldehyde [Cr(CO)5{S=CHCH=C(SEt)2}]. Irradiation of [Fe(CO)5] in the presence of [Cr(CO)5S=CSCH2CH2S] results in formation of the cluster compounds [(CO)3FeSCSCH2CH2SFe(CO)3-μS1,C,S] (Fe-Fe), XVII, and [{Fe(CO)3}3(μ3-CSCH2CH2S-μC,S)(μ3-S)] (2Fe-Fe), XVI, as well as [{Fe(CO)3}3(μ3-S2)] (2Fe-Fe) and [(CO)3FeSCH2CH2SFe(CO)3] (Fe-Fe) to employ 2-lithiobenzothiazole as an α-thio carbanion, analogous to 2-lithio-1,3-dithiane, the conversions led to the carbene complex [Cr{CN(Et)C6H4-S-o}(CO)5], XI. When 2-lithio-benzothiazole reacts with [Cr(CO)6] in THF-solution, the carbene complex [Cr{C(OEt)C=NC6H4-S-o}(CO)5], XII, is obtained after alkylation. 1H and 13C nmr were used for structure determinations
Original Title
Reaktiwiteit van enkele gekoordineerde swaelverbindings
Primary Subject
Source
Nov 1983; 104 p; Available from the Registrar, Rand Afrikaans University, P O Box 524, Johannesburg, 2000, South Africa; Thesis (M.Sc.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation; Numerical Data
Country of publication
AZOLES, CARBON ISOTOPES, CHARGED PARTICLES, CHEMICAL REACTIONS, COHERENT SCATTERING, COMPLEXES, DATA, DIFFRACTION, ELEMENTS, EVEN-ODD NUCLEI, HETEROCYCLIC COMPOUNDS, HYDROGEN ISOTOPES, INFORMATION, IONS, ISOTOPES, LIGHT NUCLEI, METALS, NUCLEI, NUMERICAL DATA, ODD-EVEN NUCLEI, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, ORGANIC OXYGEN COMPOUNDS, ORGANIC SULFUR COMPOUNDS, RADICALS, SCATTERING, SPECTRA, SPECTROSCOPY, STABLE ISOTOPES, THIAZOLES, TRANSITION ELEMENTS
Publication YearPublication Year
Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
[en] Published in summary form only
Primary Subject
Source
Universidade Estadual de Campinas (Brazil); 36 p; 1983; p. 9; Brazilian Workshop on Semiconductor Physics; Campinas, SP (Brazil); 1-3 Feb 1983
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Wolter, H.J.
Ulm Univ. (Germany, F.R.). Fakultaet fuer Theoretische Medizin
Ulm Univ. (Germany, F.R.). Fakultaet fuer Theoretische Medizin
AbstractAbstract
[en] A specific radioimmunoassay for the alpha-melanocyte-stimulating hormone (α-MSH) was developed. The standard curve shows a constant course in a sphere of 0.15-1.6 pmol/l. In the RIA, a synthetic hormone radioactively iodized by means of the chloranine-T-Method (125 I-α-MSH) was hold as tracer. The radioimmunoassay developed here for α-MSH meets criteria like specificity and sensitivity which are necessary to prove and measure α-MSH in various animal (and human) compartments. Up to now, α-MSH could not be proved in human plasma. The question of whether the ligand has a changed constitution in the plasma and can therefore be not recognized by the antibodies produced against it or whether there is no α-MSH in the human plasma could not be clarified yet. (orig.)
[de]
Es wurde ein spezifischer Radioimmunoassay fuer das alpha-melanocytenstimulierende Hormon (α-MSH) entwickelt. Die Standardkurve zeigt in einem Bereich von 0.15-1.6 pmol/l einen konstanten Verlauf. Im RIA wurde durch die Chloramin-T-Methode radioaktiv jodiertes synthetisches Hormon (125I-α-MSH) als Tracer verwendet. Der hier entwickelte Radioimmunoassay fuer α-MSH erfuellt die Kriterien wie Spezifizitaet und Sensitivitaet, die notwendig sind, um α-MSH in verschiedenen tierischen (und menschlichen) Kompartimenten nachzuweisen und zu messen. Bisher gelang es nicht, α-MSH im menschlichen Plasma nachzuweisen. Ob der Ligand im Plasma eine veraenderte Konstitution aufweist und deshalb von den gegen ihn erzeugten Antikoerpern nicht erkannt werden kann oder ob α-MSH im menschlichen Plasma nicht vorkommt, ist noch ungeklaert. (orig.)Original Title
Ein neuer Radioimmunoassay fuer das alpha-melanocytenstimulierende Hormon (α-MSH)
Primary Subject
Source
28 Jan 1983; 42 p; Available from the library of Ulm Univ. (Germany, F.R.); Diss. (Dr.med.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Country of publication
BETA DECAY RADIOISOTOPES, BIOLOGICAL MATERIALS, BLOOD, BODY FLUIDS, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, HYDROXY COMPOUNDS, IMMUNOASSAY, INTERMEDIATE MASS NUCLEI, IODINE ISOTOPES, ISOTOPE APPLICATIONS, ISOTOPES, MATERIALS, NUCLEI, ODD-EVEN NUCLEI, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, PIGMENTS, RADIOISOTOPES, TRACER TECHNIQUES
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
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